Desk



Sept. 24, 1929- P. s. HAWKINS 1,728,933

DESK

Filed Feb. 18, 1926 '5 Sheets-Sheet 1 INVENTOR.

fancy 5. .Ha wlifi w ATTORNEY.

DESK

x Sept. 24, 1929. P. s. HAWKINS Filed Feb. 18, 1926 3 Sheets-Sheet 2 i OA;

I N VEN TOR.

Percy 5. Ha whims BY 7 7/bl J W m I ATTORNEY.

Sept. 24, 1929. s, HAWKINS 1,728,933

DESK

Filed Feb. 18, 1926 3 Sheets-Sheet 5 10. !NVENOR.

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Patented Sept. 24, 1929 UNITED STATES PATENT OFFICE DESK Applicationfiled February 18, 1926. Serial No. 89,075.

The present invention relates to desks, particularly such as areemployed in schools or by draughtsmen and the like; and its object is toprovide an improved structure of that character having means whereby theworksupporting member or table of the desk may be adjusted to manyusable positions, together with means for holding the parts in suchadjustments.

This and any other and more specific objects hereinafter appearing areattained by, and the invention finds preferable embodiment in, thestructure hereinafter particularly described in the body of thisspecification and illustrated by the accompanying drawings, in whichFigure 1 is a front view of a desk structure;

Figure 2 is a left-hand side view thereof;

Figure 3 is a like View, butshowing the table or work-supporting memberof the structure in a raised position; v

Figure 4 is a transverse sectional View of the upper part of thestructure, taken on line 4-4 of Figure 1 and showing the table raised;

Figure 5 is a detail end view of a fragment of the structure;

Figure 6 is a sectional view of the structure taken on approximatelyvertical planes corresponding to line 66 of Figure 2;

Figure 7 is a transverse sectional view of certain parts of thestructure taken on a horizontal plane corresponding to line 7- -7 ofFigure 6; I

Figure 8 is a transverse sectional view of certain parts taken on ahorizontal plane corresponding to line 8-8 of Figure 6; v

Figure 9 is a side view of a support and a member pivotally mountedthereon, certain parts of the structure being sectioned vertically; v

Figure 10 is a plan view of one side of the table or work-supportingmember of the structure, certain parts being sectioned;

Figure 11 is a face view of one of the members for detachably connectingthe table and drawing board;

Figure 12 is an edgewise view thereof, the table being shown in sectiontaken on line 12-12 of Figure 11;

Figure 13 is a face view ofthe other memher for detachably connectingthe table and drawing board; a

Figure 14 is an edgewise view thereof, the drawing board being shown insection taken 05 on line 14-14 of Figure 13; and

Figure 15 is a View in perspective of an end portion of thetable-supporting frame.

In the embodiment of the invention illustrated by the accompanyingdrawings, the desk structure has a base comprising a foot 1 and anupright post 2 to which is secured as by screws 3 a bearing member 4forming with the post a vertical bearing 24 in which a support, the bar5, slides vertically, being releasably held inthe desired positiontow'hich it may be slid by any suitable means, as the cam member 6carried eccentrically of its shaft 7 turnably mounted at 8 on bearingmembers 9 securedto the post 2 as by screws 10. This cam member may beturned by its crank handle 11 or by apedal 12 on the lower end of a link13 connected at 14 to the cam members crank arm 15 and provided with acushioning spring 16 on the foot portion 1 of the structures base.

This support 5, having strengthening flanges 17, carries at its upperend a member 18, pivotally mounted on said support by a headed bolt 19passing through openings 20 30 in said member and 21 in said support,the threaded end of this bolt having a nut 22 provided with a hand Wheelportion 23 for turning it to clamp the member 18 in desired swung ortilted position on said supporty The said member 18 is positively held(additionally to the frictional holding thereof exerted by such clampingaction) by a spr'in detent 25 carried by the support 5 and hold inglyengaging any of the teeth 26 carried by said member 18 andextending in acurved line concentric with the axis of the bolt 19. The nut 22 has aradially extending arm 27 adapted in the loosening turning movement ofthe nut to engage the lateral extension 28 of said detent and releasethe same from the tooth engaged thereby. The member 18 has at its'upperend side flanges 29 extending in the structures transverse direction andforming a bearing along which the pair of frame-portions 30 are slidableon the opposite sides of member 18, said portions 30 being disposed inthe middle of a frame which carries the table or work-supporting memberof the structure, and are secured at their ends to the front and reardownwardly-extending portions 31, 32 of said frame.

The said table-carrying frame is held in the position into which it maybe slid on the bearing 29, by suitable means, as the following: A headedrod 33 extends through the frames end portions 34 and middle portions 30and through a slot 37 in the member 18, and carries sleeves 35 betweensaid end portions and middle portions as seen in Figure 6. This rod isthreaded, carrying a hand nut 36. By turning down this nut the framessaid end portions and middle portions, the sleeves 35 and the member 18are clamped together. The endportions 34of the said tablecarrying framehave guides 38 extending transversely of the structure and open upwardlyadjacent theirends, at 39. Links 40 pivoted at 41 to the middle of theends of the table or work-supporting member 43 and at 42 to the ends ofthe frame adjacent its rear edge serve to mount the table on said frame.This table has at each end lugs 44, one of which is adjacent its frontedge and the other adjacent its rear edge, either of said lugs beingmovable into and out of either of the open ends 39 .of the guide, andeither travelling along in the guide in the vertical swinging movementof the table. By this provision the table may be swung upwardly ateither its front or its rear edge from its normal resting position shownin Figures 1 and 2, one of the lugs in such operation moving out of-theadjacent open end of the guide and the other moving in the guide. Thetable may be thus swung to a desired vertical angle, such as is shown inFigures 3 and 4, and held in such position by suitable means such as thefollowing: The middle portions 30 of said frame form a slide bearing 45along which the body portion 46 of a table-supporting element slidablybears, said body portion having a catch '47 .swingably mounted at 48thereon and ,swingable'upwardly into a position engaging a side edge ofthe table in its raised position.

This catch has an arm 62 positively engaging the lower edge of theraised table and a cam portion 63 frictionally holding on the slidebearing 45, as seen in Figure 4.

On the normally under side of the table 43 is mounted turna-blyparallelly therewith a drawing board 50. The underside of the tablecarries a plate 51 with an opening therethrough having radial extensions52 provided with end stops 53. On the inner side of the drawing'board iscarried a plate 54 having an outwardly extending stud provided withradial extensions 55. In assembling the drawing board and table, thedrawing board is turned to a position in which its edges extend atapproximately an angle of 45 degrees to the edges of the table,whereupon the extensions 55 of plate 54 may be thrust through theextensions 52 of the opening in plate 51, and the drawing board may beturned and held on the table; and may in practice be turned thereon to aside up or to an end up position.

The links 40 may be squared at their outer upper corners as seen'inFigure 5 to prevent their turning too far rearwardly.

The invention being intended to be pointed out in the claims, is not tobe limited to or by details of construction of the particular embodimentthereof illustrated by the drawings or hereinbefore described.

I claim:

1. In a structure of the character described: a' supporting memberhaving a slot therethrough; a frame comprising end portions carrying atable and a pair of middle portions slidable on said member transverselythereof and along its opposite sides; a rod extending through the framessaid portions and through the slot; sleeves carried by the rod betweenthe frames end portions and middle portions; threaded means on the rodfor clamping said end portions, middle portions and said membertogether.

2. In a structure of the character described: a frame having a slidebearing extending transversely thereof; a table; links pivoted to theends thereof and to the ends of the frame for mounting the table on theframe turnably to raised'and lowered position; an element having a bodyportion slidable on said bearing and a pivotally mounted catch having acam and an arm and turnable to a position in which the cam is infrictionally holding engagement with said bearing and the arm inpositively holding engagement with a side edge of thetable in its raisedposition.

3. In a structure of the character described: a support having a detent;a tablecarrying member pivotally mounted on the support and having teethadapted to be holdinglyengaged by the detent; turnable threaded meansaxially concentric with said members pivotal mounting for clamping saidmember and the support together, said means having a radially extendingarm adapted to engage and release the detent from the teeth in a turnedposition of said means. 7 i 4. In a structure of the characterdescribed: a table, a drawing board mounted on one side of said table,turnably relatively thereto and parallelly therewith about a spindlecarried by said drawing board, a socket member in the table having aradial flange provided with a gap, the spindle of the drawing boardhaving a lugadapted to be passed through the gap in a turned position ofthe drawing board With the table and to be retained beneath the flangein another turned position of the drawing board.

In testimony whereof I have hereunto set my hand at Grand Rapids,Michigan, this 2nd day of February, 1926.

PERCY S. HAWKINS.

